Hello,
Sorry, but theme developers are not responsible for custom code placed in child theme. Often when you contact us the problem is related to your child theme. So, before posting your question enable parent theme and make sure that issue still persists!
We can help you only with issues related strictly to parent theme! Unfortunately, additional customization is outside the scope of our support (check the item support policy https://themeforest.net/page/item_support_policy )
If you need help with additional customization of your child theme you can contact WPKraken team and they will help you to sort out.
Regards